United Nations workers and Palestinian firefighters work to try and put out a fire and save bags of food aid at the United Nations headquarters after it was hit in Israeli bombardment in Gaza City, Thursday, Jan. 15, 2009. Israeli forces shelled the United Nations headquarters in the Gaza Strip on Thursday, setting the compound on fire as U.N. chief Ban Ki-moon was in the area on a mission to end Israel's devastating offensive against the territory's Hamas rulers. Ban expressed "outrage" over the incident.